The former First Lady, 54, spoke about how she can relate to Meghan, who married Prince Harry in May, and how the pressure can sometimes feel a lot.

She said: “So my biggest piece of advice would be to take some time and don’t be in a hurry to do anything.

“I spent the first few months in the White House mainly worrying about my daughters, making sure they were off to a good start at school and making new friends before I launched into any more ambitious work.

Meghan learned how proceeds from the cookbook has helped the community kitchen (Getty)

Mrs Obama, who will speak about her memoir Becoming at London’s Southbank Centre tonight (Monday) believes that Meghan’s new royal status will enable her to fulfil her passions.

“What I’d say is that there’s so much opportunity to do good with a platform like that – and I think Meghan can maximise her impact for others, as well her own happiness, if she’s doing something that resonates with her personally,” she said.

During her husband Barack Obama’s time in office, Michelle pioneered a number of initiatives during her eight years in the White House, with a special focus on children’s nutrition and health.